Specify Environemtn Tier

This commit allows users to specify environment tier.

app/models/ci/build.rb

@@ -486,6 +486,10 @@ module Ci
       self.options.fetch(:environment, {}).fetch(:action, 'start') if self.options
     end
 
+    def environment_deployment_tier
+      self.options.dig(:environment, :deployment_tier) if self.options
+    end
+
     def outdated_deployment?
       success? && !deployment.try(:last?)
     end

app/services/deployments/update_environment_service.rb

@@ -25,11 +25,10 @@ module Deployments
 
     def update_environment(deployment)
       ActiveRecord::Base.transaction do
-        if (url = expanded_environment_url)
-          environment.external_url = url
-        end
-
+        # Renew attributes at update
+        renew_external_url
         renew_auto_stop_in
+        renew_deployment_tier
         environment.fire_state_event(action)
 
         if environment.save && !environment.stopped?
@@ -56,11 +55,25 @@ module Deployments
       environment_options[:action] || 'start'
     end
 
+    def renew_external_url
+      if (url = expanded_environment_url)
+        environment.external_url = url
+      end
+    end
+
     def renew_auto_stop_in
       return unless deployable
 
       environment.auto_stop_in = deployable.environment_auto_stop_in
     end
+
+    def renew_deployment_tier
+      return unless deployable && ::Feature.enabled?(:environment_tier, deployable.project, default_enabled: :yaml)
+
+      if (tier = deployable.environment_deployment_tier)
+        environment.tier = tier
+      end
+    end
   end
 end
 

lib/gitlab/ci/config/entry/environment.rb

@@ -10,7 +10,7 @@ module Gitlab
         class Environment < ::Gitlab::Config::Entry::Node
           include ::Gitlab::Config::Entry::Configurable
 
-          ALLOWED_KEYS = %i[name url action on_stop auto_stop_in kubernetes].freeze
+          ALLOWED_KEYS = %i[name url action on_stop auto_stop_in kubernetes deployment_tier].freeze
 
           entry :kubernetes, Entry::Kubernetes, description: 'Kubernetes deployment configuration.'
 
@@ -47,6 +47,11 @@ module Gitlab
                         inclusion: { in: %w[start stop prepare], message: 'should be start, stop or prepare' },
                         allow_nil: true
 
+              validates :deployment_tier,
+                        type: String,
+                        inclusion: { in: ::Environment.tiers.keys, message: "must be one of #{::Environment.tiers.keys.join(', ')}" },
+                        allow_nil: true
+
               validates :on_stop, type: String, allow_nil: true
               validates :kubernetes, type: Hash, allow_nil: true
               validates :auto_stop_in, duration: true, allow_nil: true
@@ -85,6 +90,10 @@ module Gitlab
             value[:auto_stop_in]
           end
 
+          def deployment_tier
+            value[:deployment_tier]
+          end
+
           def value
             case @config
             when String then { name: @config, action: 'start' }

lib/gitlab/ci/pipeline/seed/environment.rb

@@ -13,7 +13,9 @@ module Gitlab
 
           def to_resource
             environments.safe_find_or_create_by(name: expanded_environment_name) do |environment|
+              # Initialize the attributes at creation
               environment.auto_stop_in = auto_stop_in
+              environment.tier = deployment_tier if ::Feature.enabled?(:environment_tier, job.project, default_enabled: :yaml)
             end
           end
 
@@ -27,6 +29,10 @@ module Gitlab
             job.environment_auto_stop_in
           end
 
+          def deployment_tier
+            job.environment_deployment_tier
+          end
+
           def expanded_environment_name
             job.expanded_environment_name
           end

spec/lib/gitlab/ci/config/entry/environment_spec.rb

@@ -305,4 +305,37 @@ RSpec.describe Gitlab::Ci::Config::Entry::Environment do
       it { expect(entry).to be_valid }
     end
   end
+
+  describe 'deployment_tier' do
+    let(:config) do
+      { name: 'customer-portal', deployment_tier: deployment_tier }
+    end
+
+    context 'is a string' do
+      let(:deployment_tier) { 'production' }
+
+      it { expect(entry).to be_valid }
+    end
+
+    context 'is a hash' do
+      let(:deployment_tier) { Hash(tier: 'production') }
+
+      it { expect(entry).not_to be_valid }
+    end
+
+    context 'is nil' do
+      let(:deployment_tier) { nil }
+
+      it { expect(entry).to be_valid }
+    end
+
+    context 'is unknown value' do
+      let(:deployment_tier) { 'unknown' }
+
+      it 'is invalid and adds an error' do
+        expect(entry).not_to be_valid
+        expect(entry.errors).to include("environment deployment tier must be one of #{::Environment.tiers.keys.join(', ')}")
+      end
+    end
+  end
 end

spec/lib/gitlab/ci/pipeline/seed/environment_spec.rb

@@ -88,6 +88,65 @@ RSpec.describe Gitlab::Ci::Pipeline::Seed::Environment do
       end
     end
 
+    context 'when job has deployment tier attribute' do
+      let(:attributes) do
+        {
+          environment: 'customer-portal',
+          options: {
+            environment: {
+              name: 'customer-portal',
+              deployment_tier: deployment_tier
+            }
+          }
+        }
+      end
+
+      let(:deployment_tier) { 'production' }
+
+      context 'when environment has not been created yet' do
+        it 'sets the specified deployment tier' do
+          is_expected.to be_production
+        end
+
+        context 'when deployment tier is staging' do
+          let(:deployment_tier) { 'staging' }
+
+          it 'sets the specified deployment tier' do
+            is_expected.to be_staging
+          end
+        end
+
+        context 'when deployment tier is unknown' do
+          let(:deployment_tier) { 'unknown' }
+
+          it 'raises an error' do
+            expect { subject }.to raise_error(ArgumentError, "'unknown' is not a valid tier")
+          end
+        end
+
+        context 'when environment_tier feature flag is disabled' do
+          before do
+            stub_feature_flags(environment_tier: false)
+          end
+
+          it 'does not set the specified tier' do
+            expect(subject.tier).to be_nil
+          end
+        end
+      end
+
+      context 'when environment has already been created' do
+        before do
+          create(:environment, :staging, project: project, name: 'customer-portal')
+        end
+
+        it 'does not overwrite the specified deployment tier' do
+          # This is to be updated when a deployment succeeded i.e. Deployments::UpdateEnvironmentService.
+          is_expected.to be_staging
+        end
+      end
+    end
+
     context 'when job starts a review app' do
       let(:environment_name) { 'review/$CI_COMMIT_REF_NAME' }
       let(:expected_environment_name) { "review/#{job.ref}" }

spec/models/ci/build_spec.rb

@@ -1261,6 +1261,21 @@ RSpec.describe Ci::Build do
     end
   end
 
+  describe '#environment_deployment_tier' do
+    subject { build.environment_deployment_tier }
+
+    let(:build) { described_class.new(options: options) }
+    let(:options) { { environment: { deployment_tier: 'production' } } }
+
+    it { is_expected.to eq('production') }
+
+    context 'when options does not include deployment_tier' do
+      let(:options) { { environment: { name: 'production' } } }
+
+      it { is_expected.to be_nil }
+    end
+  end
+
   describe 'deployment' do
     describe '#outdated_deployment?' do
       subject { build.outdated_deployment? }

spec/services/ci/create_pipeline_service/environment_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Ci::CreatePipelineService do
+  let_it_be(:project) { create(:project, :repository) }
+  let_it_be(:developer) { create(:user) }
+  let(:service) { described_class.new(project, user, ref: 'master') }
+  let(:user) { developer }
+
+  before_all do
+    project.add_developer(developer)
+  end
+
+  describe '#execute' do
+    subject { service.execute(:push) }
+
+    context 'with deployment tier' do
+      before do
+        config = YAML.dump(
+          deploy: {
+            script: 'ls',
+            environment: { name: "review/$CI_COMMIT_REF_NAME", deployment_tier: tier }
+          })
+
+        stub_ci_pipeline_yaml_file(config)
+      end
+
+      let(:tier) { 'development' }
+
+      it 'creates the environment with the expected tier' do
+        is_expected.to be_created_successfully
+
+        expect(Environment.find_by_name("review/master")).to be_development
+      end
+
+      context 'when tier is testing' do
+        let(:tier) { 'testing' }
+
+        it 'creates the environment with the expected tier' do
+          is_expected.to be_created_successfully
+
+          expect(Environment.find_by_name("review/master")).to be_testing
+        end
+      end
+    end
+  end
+end

spec/services/deployments/update_environment_service_spec.rb

@@ -5,7 +5,7 @@ require 'spec_helper'
 RSpec.describe Deployments::UpdateEnvironmentService do
   let(:user) { create(:user) }
   let(:project) { create(:project, :repository) }
-  let(:options) { { name: 'production' } }
+  let(:options) { { name: environment_name } }
   let(:pipeline) do
     create(
       :ci_pipeline,
@@ -20,13 +20,14 @@ RSpec.describe Deployments::UpdateEnvironmentService do
       pipeline: pipeline,
       ref: 'master',
       tag: false,
-      environment: 'production',
+      environment: environment_name,
       options: { environment: options },
       project: project)
   end
 
   let(:deployment) { job.deployment }
   let(:environment) { deployment.environment }
+  let(:environment_name) { 'production' }
 
   subject(:service) { described_class.new(deployment) }
 
@@ -131,6 +132,66 @@ RSpec.describe Deployments::UpdateEnvironmentService do
         end
       end
     end
+
+    context 'when deployment tier is specified' do
+      let(:environment_name) { 'customer-portal' }
+      let(:options) { { name: environment_name, deployment_tier: 'production' } }
+
+      context 'when tier has already been set' do
+        before do
+          environment.update_column(:tier, Environment.tiers[:other])
+        end
+
+        it 'overwrites the guessed tier by the specified deployment tier' do
+          expect { subject.execute }
+            .to change { environment.reset.tier }.from('other').to('production')
+        end
+      end
+
+      context 'when tier has not been set' do
+        before do
+          environment.update_column(:tier, nil)
+        end
+
+        it 'sets the specified deployment tier' do
+          expect { subject.execute }
+            .to change { environment.reset.tier }.from(nil).to('production')
+        end
+
+        context 'when deployment was created by an external CD system' do
+          before do
+            deployment.update_column(:deployable_id, nil)
+          end
+
+          it 'guesses the deployment tier' do
+            expect { subject.execute }
+              .to change { environment.reset.tier }.from(nil).to('other')
+          end
+        end
+
+        context 'when environment_tier feature flag is disabled' do
+          before do
+            stub_feature_flags(environment_tier: false)
+          end
+
+          it 'does not set the specified deployment tier' do
+            expect { subject.execute }.not_to change { environment.reset.tier }
+          end
+        end
+      end
+    end
+
+    context 'when deployment tier is not specified' do
+      let(:environment_name) { 'customer-portal' }
+      let(:options) { { name: environment_name } }
+
+      it 'guesses the deployment tier' do
+        environment.update_column(:tier, nil)
+
+        expect { subject.execute }
+          .to change { environment.reset.tier }.from(nil).to('other')
+      end
+    end
   end
 
   describe '#expanded_environment_url' do